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2007.
POSTBUCKLING ANALYSIS OF RECTANGULAR PLATES USING FINITE ELEMENT METHOD
This paper presents numerical approach to post-buckling analysis of thin rectangular plates loaded in its plane, where deformation of middle plane is neglected. Numerical analysis is performed by finite elements method, dividing plate into mesh of twelve d.o.f. rectangular Kirchhoff finite elements. Outlines of deriving nonlinear equilibrium equation containing third order nonlinearities, arising from large displacement, are presented. Solution of equilibrium equation is obtained using iterative method. Numerical analysis is simplified using results of eigenvalues of linear stability analysis.